CN205380889U - A extruding means that is used for flowable nature raw materials 3D to print - Google Patents
A extruding means that is used for flowable nature raw materials 3D to print Download PDFInfo
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- CN205380889U CN205380889U CN201620109549.9U CN201620109549U CN205380889U CN 205380889 U CN205380889 U CN 205380889U CN 201620109549 U CN201620109549 U CN 201620109549U CN 205380889 U CN205380889 U CN 205380889U
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- roller
- raw material
- wriggling
- extrusion mechanism
- flowable
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Abstract
The utility model discloses an extruding means that is used for flowable nature raw materials 3D to print, it includes the support and installs the motor on the support, wriggling unit and shower nozzle, the motor can drive wriggling unit wriggling, the wriggling unit is including setting up the wriggling unit casing on the support, and the parallel interval in the casing sets up the roller train that at least three gyro wheel is formed, and the clearance space of adjacent gyro wheel inside walks abreast respectively and sets up a plurality of rollers, many raw materials hoses respectively the one -to -one setting in each clearance space and can rotate and drive roller roll in -process in by corresponding clearance space at the gyro wheel the roller extrusion to raw materials in this each raw materials hose of mode can be extrudeed and carry to the shower nozzle by the wriggling. The utility model also discloses a print system who has above -mentioned extruding means. The utility model discloses a mutual of compressed air, head tank and many pump heads can be ensured to avoid disconnected material in coordination and arouse the inhomogeneous phenomenon of flow, recovery cleaning convenience by the peristaltic pump pulsation when print speed is very fast.
Description
Technical field
This utility model belongs to 3D and prints field, is specifically related to a kind of for the flowable raw material 3D extrusion mechanism printed.
Background technology
It is the one of rapid shaping technique that 3D prints, and it is a kind of based on mathematical model file, use powdery metal, clay, plastics etc. can jointing material, carried out the technology of constructed object by the mode successively printed.When printing, software completes a series of digital slices by CAD (computer aided design) technology (CAD), and is sent on 3D printer by the information of these sections, and slim for continuous print aspect can be stacked up by the latter, until a solid body molding.
The extrusion mechanism of current most desktop printer, no matter it is solid wire rod or the extrusion of colloid many employings leading screw with certain fluidity, such as, disclosed in patent CN105057667A a kind of 3D printing mechanism, adopt motor, syringe and ball screw framework, be mainly used in conductive silver paste and print electronic circuit.Processing cost and the processing request of leading screw extrusion mechanism are higher, when leading screw class extrusion mechanism prints for food, change raw material and cleaning leading screw extrusion mechanism is more bothersome, if not washing clean clearly easy batch mixing, or the problem that breed bacteria causes the aspects such as food safety.
There is the raw material of certain fluidised form (flowable) carry out 3D as printed material to be printed upon application at present relatively broad, this kind of raw material such as electrically conductive ink, magnetic slurry, clay slurry, food size, thawing chocolate etc., it is because of the physical property of raw material, carry out the extrusion mechanism of transferring raw material when 3D prints to match with the physical property of slurry or colloid, raw material transmits the physical characteristic that also must be adapted for these raw materials simultaneously, and is applicable to corresponding fast setting and drying system.
3D for flowable raw material prints, also there is the design adopting wriggling extrusion way, such as Chinese patent CN204019803U discloses a kind of 3D printer feeding device, and in the program, the peristaltic pump of feeding device makes many rods flexible pipe be extruded thus being used for printing by feedstock transportation to shower nozzle by rotation.This can print the raw material chocolate material etc. that such as heat is melted with certain fluidised form (flowable), and can also printed material be incubated by installing the means such as heat preservation strip additional.But, this wriggling pump structure is actually single head and wriggles, namely it is only that single wriggling is as drive source, this single head peristaltic pump actually only acts upon on the very short region of centre of longer material hose because of extruding on the one hand in transferring raw material process, its can not consumptive material that well transport viscosity is bigger, when print speed is very fast it is possible that the situation of fracture；Further, since this single head is wriggled, overstocked motion has discontinuity so that can there is bigger pulsation phenomenon in feeding process, cause that mass flow discrepancy is even so that print quality is poor, it is impossible to realize fine printing.
Utility model content
Disadvantages described above or Improvement requirement for prior art, this utility model provides a kind of for the flowable raw material 3D extrusion mechanism printed and application thereof, it is by improving simultaneously by the optimization of corresponding material extruding supporting structure the structure of creeping mechanism, most of length areas of feed line can be acted on, and overcome the pulsation problem in feeding, the generation of fracture phenomenon when avoiding print speed very fast, material extruding smooth-going is stable, thus realizing fine efficient printing effect.
For achieving the above object, according to this utility model, there is provided a kind of for the flowable raw material 3D extrusion mechanism printed, it includes support and rack-mount motor, wriggling unit and shower nozzle, described motor can drive described wriggling unit to wriggle, to be printed to shower nozzle by the printing feedstock transportation of the flowable in the material hose connected with head tank；
It is characterized in that, described wriggling unit includes being arranged on the wriggling unit housings on support and the parallel interval in housing is arranged and can the roller set of at least three roller composition of synchronous axial system, and multiple roller is set in the clearance space of adjacent rollers respectively parallel, many material hose one_to_one corresponding respectively are arranged in each clearance space and can rotate at roller and drive and extruded by the described roller in respective clearance space in roller rolls process, and the raw material in each material hose can be wriggled and be extruded and be delivered to shower nozzle in this way.
As of the present utility model it is preferred that, described roller two ends are fixed with the side of corresponding two rollers respectively, and are that circumference is evenly arranged along the outward flange of corresponding roller.
As of the present utility model it is preferred that, described roller is preferably in cylinder, and it is vertical with corresponding roller side.
As of the present utility model it is preferred that, each roller in two adjacent clearance spaces mutually staggers in roller circumference, it is preferable that the arbitrary roller in any of which clearance space divides the angle that adjacent two rollers in another adjacent clearance space are formed in the circumferential in the circumferential equally.
As of the present utility model it is preferred that, the roller quantity in each described clearance space can be identical, for instance is 3-6, it is also possible to different.
As of the present utility model it is preferred that, in described wriggling unit housings, wherein side is respectively arranged with the flexible pipe import that the multiple and head tank identical with described clearance space quantity connects, accordingly, relative opposite side be respectively provided with multiple flexible pipe connected with printing head outlet, each material hose in described wriggling unit respectively with a wherein flexible pipe import and a flexible pipe outlet.
As of the present utility model it is preferred that, described support is additionally provided with intermeshing driving gear and driven gear, driving gear is connected with motor output shaft, and driven gear is connected with peristaltic pump, and motor drives each roller synchronous axial system in peristaltic pump by above-mentioned meshed gears.
As of the present utility model it is preferred that, roller has hole, location on the roller of driven gear side, described driven gear is coaxially fixedly installed mounting disc, mounting disc is provided with the key of projection, driven gear is coordinated with the hole, location on roller by this key, it is achieved be connected with roller to transmit power.
As of the present utility model it is preferred that, also including air compressor and air purifier, described air compressor produces compression air after air purifier is cleaned, and is filled with in head tank, with the piston in extruding raw material tank, thereby through flexible pipe by feedstock transportation to wriggling unit inlet.
As of the present utility model it is preferred that, described head tank is additionally provided with the defecator for filter stock, for eliminating the defoaming device of bubble, for monitoring the Viscosity Monitoring device of material viscosity.
The above-mentioned this mode utilizing the air purified that raw material carries out overstocking promotion by air pump in this utility model, and in conjunction with the characteristic of flowable raw material and corresponding de-bubble and defecator, can so that raw material have bubble, flow-control is more uniform and stable, is conducive to improving print quality.
According to another aspect of the present utility model, it is provided that a kind of print system with above-mentioned extrusion mechanism.
In general, by the contemplated above technical scheme of this utility model compared with prior art, have the advantages that
(1) the wriggling unit of mechanism of the present utility model adopts multiple wriggling passages, on the one hand can so that peristaltic action acts on longer flexible pipe region, and due to the multichannel effect of cancelling out each other, it is possible to the bigger pulsation problem existed when solving raw material by creeping mechanism；
(2) in the wriggling unit in this utility model, roller and supporting surface are mutual rolling extrusion, it is not easy to leave dead angle, and its active force is strong, can well the bigger consumptive material of transport viscosity, especially because its air compressor and the even many pump heads of double pump head cooperate mode, do not appear in print speed very fast time the situation of fracture occurs.
(3) in this utility model, insulation, filtration and the defoaming device that head tank is arranged, can ensure that the fine and smooth uniform of raw material, the defect avoiding shower nozzle to block at print procedure and to cause due to bubble, Viscosity Monitoring can adjust air pressure size for extrusion mechanism, it is ensured that during feedstock transportation, constant flow provides parameter.
(4) wriggling extrusion mechanism of the present utility model, the diameter of the wire stock of its extrusion is comparatively uniform, when changing raw material for different field, the composite pollution of raw material can be avoided by changing flexible pipe, print especially for food, flexible pipe used is all food stage and the medical grade flexible pipe of prior cleaning and sterilizing and sealing, can ensure that health and safety.
(5) wriggling extrusion mechanism of the present utility model, mutually collaborative can ensure that adopting compression air, head tank and double pump head is avoided fracture and is caused the even phenomenon of mass flow discrepancy by peristaltic pump pulsation when print speed is very fast, and guarantee the stability printed, improve print quality, this extrusion mechanism maintenance clean is convenient, changes flexible pipe and just can complete to clean and safeguard.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram for the flowable raw material 3D extrusion mechanism printed constructed by this utility model embodiment；
Fig. 2 is the structural representation of the extrusion mechanism in Fig. 1；
Fig. 3 is the supporting structure schematic diagram of extrusion mechanism in Fig. 2；
Fig. 4 is the wriggling cellular construction schematic diagram of the extrusion mechanism in Fig. 2；
In all of the figs, identical accompanying drawing labelling is used for representing identical element or structure, wherein: 1-decelerating step motor, and 2-support, 3-left wheel roller, the left import draw-in groove of 4-creeping mechanism, the right import draw-in groove of 5-creeping mechanism, the right roller roller of 6-, 7-roller, 8-creeping mechanism, the right outlet draw-in groove of 9-creeping mechanism, the left outlet draw-in groove of 10-creeping mechanism, 11-shower nozzle upper cover, 12-printing head, 13-positions light barrier, 14-driven gear, 15-drives gear, 16-left wheel, the right roller of 17-.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.As long as just can be mutually combined additionally, technical characteristic involved in each embodiment of this utility model disclosed below does not constitute conflict each other.
As illustrated in fig. 1 and 2, a kind of extrusion mechanism for flowable raw material 3D printing constructed by this utility model embodiment, it includes air compressor 26, air purifier 27, head tank 28, support 2 and the decelerating step motor 1 being arranged on support 2, wriggling unit 8 and shower nozzle 12.
Air compressor 26 produces compression air after air purifier 27 is cleaned, and is filled with in head tank 28, with the piston in extruding raw material tank 28, it is preferable that head tank 28 vertically places and gas feed is above head tank, and material outlet is below head tank 28.Raw material in head tank 28 is extruded under the promotion of piston, and and then be transported to wriggling unit inlet by flexible pipe, in the present embodiment, preferred wriggling unit inlet is two, two flexible pipes are stuck in creeping mechanism left outlet draw-in groove and the right import draw-in groove of creeping mechanism, head tank carries printing consumables that printing raw material is respectively fed to the import of two flexible pipes by three way cock by a flexible pipe, raw material is by being extruded by two flexible pipe outlets of extruder respectively after wriggling extrusion mechanism, raw material is pooled in an outlet hose again through a threeway by described two flexible pipes outlet, a described outlet hose connects printer head and extrudes again through shower nozzle.
In one embodiment, described air compressor passes through a trachea Bonding pressure actuator, and the compression air through air purifier connects head tank by a trachea.
In one embodiment, described head tank outer wall is provided with muff, it is adaptable to raw material is carried out temperature constant, is particularly conducive to keep viscosity and the flow stability of flowable raw material, thus ensureing that feedstock transportation stably improves print quality.
In another embodiment, described head tank is additionally provided with the defecator for filter stock, for eliminating the defoaming device of bubble and/or for monitoring the Viscosity Monitoring device of material viscosity so that head tank can also have filtration, de-bubble and Viscosity Monitoring function.
Said apparatus one is to can ensure that the exquisiteness of raw material is uniform, the defect avoided shower nozzle to block at print procedure and cause due to bubble, and two is that Viscosity Monitoring can adjust air pressure size for extrusion mechanism, it is ensured that during feedstock transportation, constant flow provides parameter.
In another embodiment, told head tank outer wall is also equipped with mechanical vibrator device, uniformly vibrates for flowable raw material, eliminates bubble and makes material flow evenly stable.
Side on support 2 is provided with decelerating step motor 1, and opposite side installs wriggling unit.Wherein, support 2 being additionally provided with intermeshing driving gear 15 and driven gear 14, driving gear 15 is connected with decelerating step motor output shaft, and driven gear 14 is connected with peristaltic pump, and motor 1 drives peristaltic pump to rotate by above-mentioned drive mechanism.
As shown in Figures 3 and 4, wriggling unit includes the wriggling unit housings being arranged on support 2, it is arranged on the roller set in housing, in the present embodiment, as shown in Figure 4, roller set preferably includes three parallel and parallel arrangement of three rollers that keep at a certain distance away, and so forms two groups of clearance spaces between roller, its space wriggled as raw material.The preferably circular plate body structure of roller, three rollers be fixedly and coaxially connected can synchronous axial system, the space between each roller is provided with multiple roller parallel, each roller is preferably in cylindrical structure, its two ends are fixing with roller side respectively to be connected, and vertical with roller circular surface.
Preferably, the multiple rollers arranged between two rollers were upwards uniformly distinguished at roller circular surface last week, and roller quantity is preferably 3-6, it is also possible to be other quantity.
The import of unit of wriggling in this utility model can carry out specifically chosen according to practical situation, for instance three and with first-class, correspondingly, being also adapted to property of the quantity ground correspondence of roller can be four or more than.
Having hole, location in three rollers on the roller of driven gear side, it is connected for fixing with driven gear 14, for transmission power.In one embodiment, driven gear 14 being coaxially fixedly installed mounting disc, mounting disc is provided with the key of projection, driven gear 14 is connected with roller to transmit power by the mode in this key and hole.
In the present embodiment, as shown in Figure 4, two flexible pipe import draw-in grooves it are respectively arranged with above the housing of wriggling unit, respectively import draw-in groove 4 and import draw-in groove 5, it is respectively arranged below two flexible pipe outlet draw-in grooves simultaneously, respectively outlet draw-in groove 9 and outlet draw-in groove 10, these two pair draw-in groove is respectively used to left side flexible pipe and the right flexible pipe are positioned prevent flexible pipe from horizontally slipping when being squeezed.
Described decelerating step motor 1 is used for driving gear 15 driven gear 14, described gear 14 connects roller 7 by key 24 and hole 25, gear 14 rotates and drives roller 7 to rotate, roller 3 on described wriggling unit inner hose roller in creeping mechanism 8 and extrusion under the rolling of roller 6, when arriving separately at outlet 10 and outlet 9 at raw material, two strands of raw materials are accumulated one consumptive material by recycling three way cock, and one consumptive material described is transported to printer head again through flexible pipe.
In the present embodiment, in two roller spaces, the quantity of roller is all 3, and in the circumferential in 120 degree between each roller in left wheel space or right roller space, preferably, roller in left wheel space staggers in the circumferential mutually with the roller in right roller space relatively, for instance in the circumferential on lucky angular bisector between two rollers in right roller space.The mode of this interlaced arrangement so that the raw material in flexible pipe or the pressure peak and valley suffered by consumptive material are complementary, can cause that produced by the roller of left and right, pulsation can be cancelled out each other just, it is possible to ripple amplitude when reducing raw material extrusion improves the uniformity of extrusion silk material.In another embodiment, the quantity that roller is arranged in roller space, left and right is all 6, angle formed by each roller is 60 degree, roller in left wheel space staggers in the circumferential mutually with the roller in right roller space relatively, for instance in the circumferential on lucky angular bisector between two rollers in right roller space.
Being arranged below printing spout 12 being positioned at the outlet of wriggling unit housings, it passes through flexible pipe and outlet, and the raw material of wriggling unit extruding output prints spout 12 by exporting to enter, and then prints.
Certainly, in above-described embodiment, the number of rollers in wriggling unit is set to three, but this utility model is not limited to this for number of rollers, actually can carry out specifically chosen according to actual needs, can be such as four or more than, more extruding space so that being formed, correspondingly can be equipped with many flexible pipes, to realize multichannel extruding output.
The printer with above-mentioned extrusion mechanism may be used for 3D or the 2D printing in various field, for instance may be used for food 2D and 3D and prints, it is preferable that the consumptive material flexible pipe wherein used is food stage flexible pipe and medical grade flexible pipe.Can also is that the printing for potter's clay or clay 3D, described flexible pipe are preferably corrosion resistant chemical industry special hose.Can be also used for 2D and the 3D of electrically conductive ink flexible circuit to print, described flexible pipe is corrosion resistant chemical industry special hose.Can be used for the 3D of bonded permanent magnet to print, described flexible pipe can be corrosion resistant nonmagnetic special hose.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (10)
1. the extrusion mechanism for flowable raw material 3D printing, it includes support (2) and the motor (1) being arranged on support (2), wriggling unit (8) and shower nozzle (12), described motor (1) can drive described wriggling unit (8) to wriggle, and prints to shower nozzle with the printing feedstock transportation by the flowable in the material hose connected with head tank (28)；
It is characterized in that, described wriggling unit includes the wriggling unit housings being arranged on support (2), and be arranged on parallel interval in housing and arrange and can the roller set that forms of at least three roller (7) of synchronous axial system, and in the clearance space of adjacent rollers (7), multiple roller (3 is set respectively parallel, 6), many material hose one_to_one corresponding respectively are arranged in each clearance space and can rotate at roller (7) and drive roller (3, 6) by the described roller (3 in respective clearance space in rolling process, 6) extruding, raw material in each material hose can be wriggled and be extruded and be delivered to shower nozzle in this way.
2. according to claim 1 for the flowable raw material 3D extrusion mechanism printed, wherein, described roller (3,6) two ends are fixed with the side of corresponding two rollers (7) respectively, and the outward flange of the corresponding roller (7) in edge is that circumference is evenly arranged.
3. according to claim 2 for the flowable raw material 3D extrusion mechanism printed, wherein said roller (3,6) is in cylinder, and it is vertical with corresponding roller (7) side.
4. according to claim 3 for the flowable raw material 3D extrusion mechanism printed, wherein, each roller (3,6) in two adjacent clearance spaces mutually staggers in roller (7) circumference.
5. the extrusion mechanism for flowable raw material 3D printing according to any one of claim 1-4, wherein, roller (3, the 6) quantity in each described clearance space is identical, or different.
6. the extrusion mechanism for flowable raw material 3D printing according to any one of claim 1-4, wherein, in described wriggling unit housings, wherein side is respectively arranged with the flexible pipe import (4,5) that the multiple and head tank identical with described clearance space quantity connects, accordingly, relative opposite side be respectively provided with multiple flexible pipe connected with printing head outlet (9,10), each material hose in described wriggling unit (8) respectively with a wherein flexible pipe import and a flexible pipe outlet.
7. the extrusion mechanism for flowable raw material 3D printing according to any one of claim 1-4, wherein, described support (2) is additionally provided with intermeshing driving gear (15) and driven gear (14), driving gear (15) is connected with motor (1) output shaft, driven gear (14) is connected with wriggling unit, and motor (1) drives each roller synchronous axial system in wriggling unit by above-mentioned meshed gears.
8. the extrusion mechanism for flowable raw material 3D printing according to any one of claim 1-4, wherein, roller has hole, location on the roller of driven gear side, described driven gear is coaxially fixedly installed mounting disc on (14), mounting disc is provided with the key of projection, driven gear (14) is coordinated with the hole, location on roller by this key, it is achieved be connected with roller to transmit power.
9. the extrusion mechanism for flowable raw material 3D printing according to any one of claim 1-4, wherein, also include air compressor (26) and air purifier (27), described air compressor (26) produces compression air after air purifier (27) is cleaned, it is filled with in head tank (28), with the piston in extruding raw material tank (28), thereby through flexible pipe by feedstock transportation to wriggling unit inlet.
10. the extrusion mechanism for flowable raw material 3D printing according to any one of claim 1-4, wherein said head tank is additionally provided with the defecator for filter stock, for eliminating the defoaming device of bubble and/or for monitoring the Viscosity Monitoring device of material viscosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109549.9U CN205380889U (en) | 2016-02-03 | 2016-02-03 | A extruding means that is used for flowable nature raw materials 3D to print |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620109549.9U CN205380889U (en) | 2016-02-03 | 2016-02-03 | A extruding means that is used for flowable nature raw materials 3D to print |
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| Publication Number | Publication Date |
|---|---|
| CN205380889U true CN205380889U (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620109549.9U Expired - Fee Related CN205380889U (en) | 2016-02-03 | 2016-02-03 | A extruding means that is used for flowable nature raw materials 3D to print |
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| CN (1) | CN205380889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538724A (en) * | 2016-02-03 | 2016-05-04 | 华中科技大学 | Extrusion mechanism for 3D printing of flowable material |
| CN108105074A (en) * | 2017-11-27 | 2018-06-01 | 中国科学院苏州生物医学工程技术研究所 | A kind of peristaltic pump diverter control system and control method |
-
2016
- 2016-02-03 CN CN201620109549.9U patent/CN205380889U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538724A (en) * | 2016-02-03 | 2016-05-04 | 华中科技大学 | Extrusion mechanism for 3D printing of flowable material |
| CN108105074A (en) * | 2017-11-27 | 2018-06-01 | 中国科学院苏州生物医学工程技术研究所 | A kind of peristaltic pump diverter control system and control method |
| CN108105074B (en) * | 2017-11-27 | 2023-09-12 | 中国科学院苏州生物医学工程技术研究所 | Peristaltic pump diversion control system and control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20190203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |